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ISO Fit Tolerance Calculator (ISO 286)

Calculates hole and shaft tolerances and fit type based on ISO 286-1:2010.

Standard ISO 286-1:2010 JIS Equivalent JIS B 0401
HOW-TO How to Calculate ISO Fit Tolerances +
  1. Enter the nominal diameter in mm.
  2. Select the fundamental deviation (e.g. H, g) and IT grade (e.g. 7, 6) for hole and shaft.
  3. Tolerances and maximum/minimum clearance or interference are calculated automatically.
  4. Use the preset buttons to quickly select common fit combinations.

Result

Fit Type
—
Hole Upper Deviation ES
— mm
Hole Lower Deviation EI
— mm
Shaft Upper Deviation es
— mm
Shaft Lower Deviation ei
— mm
Maximum Clearance
— mm
Minimum Clearance
— mm
INPUTS
ISO Fit Tolerance Calculator (ISO 286)
1–3150 mm
mm

1–3150 mm

Fundamental deviation + IT grade (e.g. H7)

Fundamental deviation + IT grade (e.g. g6)

Common fits: